多媒体编程

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Visual C++

CMPEG1Builder.h：源码内容

							//
// CMPEG1Builder.h
//
#ifndef __H_CMPEG1Builder__
#define __H_CMPEG1Builder__
#include "IMPEG1Builder.h"
class CMPEG1Builder : public CUnknown
                    , public IMPEG1Builder
					, public IDistributorNotify
{
public:
	CMPEG1Builder(LPUNKNOWN pUnk, HRESULT *phr);
    ~CMPEG1Builder();
	DECLARE_IUNKNOWN;
	static CUnknown * WINAPI CreateInstance(LPUNKNOWN punk, HRESULT *phr);
	STDMETHODIMP NonDelegatingQueryInterface(REFIID riid, void ** ppv); 
	// --- IMPEG1Builder methods ---
	STDMETHODIMP IsMPEG1File(const char * inFilePath);
	STDMETHODIMP RenderMPEG1File(const char * inFilePath);
	// --- IDistributorNotify methods ---
	STDMETHODIMP NotifyGraphChange(void);
	STDMETHODIMP Pause(void);
	STDMETHODIMP Run(REFERENCE_TIME tStart);
	STDMETHODIMP Stop(void);
	STDMETHODIMP SetSyncSource(IReferenceClock *pClock);
	
private:
	IGraphBuilder * RetrieveGraphBuilder(void);
	IPin * GetPinByDirection(IBaseFilter * inFilter, PIN_DIRECTION inDirection);
	IPin * GetPinByName(IBaseFilter * inFilter, const char * inPinName, BOOL inInput = FALSE);
};
#endif // __H_CMPEG1Builder__

						